bf pr rev vibrato

[scole]

i thought it was weird that the vibrato was working without the foot sw plugged in, but dodnt think it was wrong untill it stopped working, i put the swith in and still doesnt work. how do i trouble shoot the vibrato circuit?

[tubeswell]

Check that the LFO stage is getting the right plate voltage. Also you need a decent tube in there - its got to have enough gain to make it work. You may have wired it up wrong perhaps - go back and check. Is something shorting? (the footswitch socket?). Did you use an antilog pot for the speed pot? etc

[scole]

looks like v4 went down. i took some voltages and v4 only had 120 volts, should have 260. i put in another tube and the trem is back on line. i tried to take a look at the voltage but wouldnt stop riding up and down so i guess thats the trem circuit doing its thing.